Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4f775e9d5f61868…

MALICIOUS

PDF

71.2 KB Created: 2021-02-23 04:33:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d5cd8ffce88a094d65daa1babb6a91ef SHA-1: 961473a93bbd86f9fb0da6848cd33f386ad1b49d SHA-256: d4f775e9d5f618683417f6c6127904b02b3328c397820218691e55cb0814833b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://jacksth.ru/wix?keyword=defense+grid+2+trophy+guide PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4382961/normal_5ff7aa83d5920.pdfIn PDF document text
    • http://manaluw.iblogger.org/79840140137.pdfIn PDF document text
    • http://jisipajimeleja.22web.org/whirlpool_cabrio_top_load_washer_not_spinning.pdfIn PDF document text
    • https://cdn.sqhk.co/purilusevike/iajbwvr/68831480338.pdfIn PDF document text
    • https://cdn.sqhk.co/netimupoxojo/Xyo9hb9/juventus_fc_kits_dls.pdfIn PDF document text
    • https://cdn.sqhk.co/zuronenom/bjcw3ij/10292690116.pdfIn PDF document text
    • https://cdn.sqhk.co/pibusupi/gbr5qeq/90964399679.pdfIn PDF document text
    • https://cdn.sqhk.co/megilujij/bkkmRjj/77322828974.pdfIn PDF document text
    • https://cdn.sqhk.co/powirafawume/gJidbUl/minecraft_hopper_cart_unloader_1._14.pdfIn PDF document text
    • http://xaninivinekeni.iblogger.org/rabarutokuzewinesav.pdfIn PDF document text
    • https://cdn.sqhk.co/jimumakevaji/hbchijj/wifi_weather_station_home_assistant.pdfIn PDF document text
    • https://cdn.sqhk.co/durotula/83zCntl/56244411714.pdfIn PDF document text
    • https://cdn.sqhk.co/janogoxuke/MHYjcii/gixafisiwa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://ravuxigud.epizy.com/garmin_fenix_6_user_guide.pdfIn PDF document text
    • http://demudixidetaku.rf.gd/51123992724.pdfIn PDF document text
    • http://zevomes.rf.gd/tobebulap.pdfIn PDF document text
    • http://nogojituwizax.epizy.com/81428768572.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cccb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCCB 5176 bytes
SHA-256: ae88fc97ac2af634a33bbf29d2052158d2421baa5eb0d3f6fabe347b853292cb
font_01_sfnt_off0000de76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE76 10336 bytes
SHA-256: 0c4271b37b11c65972555e24f900099e1ac1034268263f8cf5dc35c848882d31
font_02_sfnt_off000101e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101E1 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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